Weather Records on 25 August 1917

65 weather records were set or tied worldwide on 25 August 1917. Highest significance: Cleveland 2717 Euclid, US.

Key Facts for 25 August 1917

On 25 August 1917, 65 weather records were set or tied at long-record stations worldwide.
26 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 4 monthly and 60 daily.
Cleveland 2717 Euclid set a daily record precipitation of 35.1 mm (1.4 in) on 25 August 1917.
Across 168 earlier years (1796 to 2026) the same calendar date averaged 439 records.

Record Map

65 stations

65 station records on 25 August 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 August 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cleveland 2717 Euclid	United States	Record daily precipitation	35.1 mm (1.4 in)	35 of 100 (Notable)
Chatham	Canada	Record high minimum temperature	21.1 C (70.0 F)	27 of 100 (Routine)
Barrie	Canada	Record low maximum temperature	15.6 C (60.1 F)	21 of 100 (Routine)
Port Dover	Canada	Record low maximum temperature	15.6 C (60.1 F)	21 of 100 (Routine)
Maly Uzen'	Russia	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Barrow Creek	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Ekaterinburg	Russia	Record daily precipitation	15.3 mm (0.6 in)	20 of 100 (Routine)
Tbilisi	Georgia	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Tennant Creek Post Office	Australia	Record daily precipitation	5.8 mm (0.23 in)	20 of 100 (Routine)
Boulia Airport	Australia	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	15.6 C (60.1 F)	20 of 100 (Routine)
Alice Springs Post Office	Australia	Record daily precipitation	13.0 mm (0.5 in)	19 of 100 (Routine)
Haparanda	Sweden	Record high minimum temperature	15.0 C (59.0 F)	18 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	13.5 C (56.3 F)	18 of 100 (Routine)
Milwaukee Wb City	United States	Record low minimum temperature	6.7 C (44.1 F)	18 of 100 (Routine)
Powell Creek	Australia	Record daily precipitation	1.3 mm (0.05 in)	17 of 100 (Routine)
Tempe Downs	Australia	Record daily precipitation	5.6 mm (0.22 in)	17 of 100 (Routine)
Woodstock	Canada	Record low maximum temperature	16.1 C (61.0 F)	17 of 100 (Routine)
Zametchino	Russia	Record high minimum temperature	13.9 C (57.0 F)	17 of 100 (Routine)
Innsbruck	Austria	Record high minimum temperature	15.4 C (59.7 F)	16 of 100 (Routine)
Halifax	Canada	Record high minimum temperature	20.0 C (68.0 F)	16 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record high minimum temperature	14.9 C (58.8 F)	16 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	11.2 C (52.2 F)	16 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	7.2 C (45.0 F)	16 of 100 (Routine)
Charlotte Waters	Australia	Record daily precipitation	3.8 mm (0.15 in)	15 of 100 (Routine)
Isisford Post Office	Australia	Record daily precipitation	7.9 mm (0.31 in)	15 of 100 (Routine)
Quebec	Canada	Record high minimum temperature	19.4 C (66.9 F)	15 of 100 (Routine)
Pointe Au Pere	Canada	Record high maximum temperature	25.6 C (78.1 F)	14 of 100 (Routine)
Green Bay	United States	Record low minimum temperature	4.4 C (39.9 F)	14 of 100 (Routine)
Parry Sound	Canada	Record low maximum temperature	16.1 C (61.0 F)	13 of 100 (Routine)
St John's	Canada	Record high maximum temperature	27.8 C (82.0 F)	13 of 100 (Routine)
St John's	Canada	Record high minimum temperature	17.8 C (64.0 F)	13 of 100 (Routine)
Darwin Post Office	Australia	Record high minimum temperature	24.2 C (75.6 F)	12 of 100 (Routine)
Anticosti SW Point	Canada	Record high minimum temperature	15.6 C (60.1 F)	12 of 100 (Routine)
Douglas	South Africa	Record daily precipitation	0.3 mm (0.01 in)	12 of 100 (Routine)
Newlands	South Africa	Record daily precipitation	1.3 mm (0.05 in)	12 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low maximum temperature	21.7 C (71.1 F)	12 of 100 (Routine)
Boras	Sweden	Record daily precipitation	24.6 mm (1.0 in)	11 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	14.0 C (57.2 F)	11 of 100 (Routine)
Wandin (Yallock)	Australia	Record daily precipitation	7.6 mm (0.30 in)	10 of 100 (Routine)
Coranderrk Badger Weir	Australia	Record daily precipitation	6.9 mm (0.27 in)	9 of 100 (Routine)
Lindsay	Canada	Record low maximum temperature	15.6 C (60.1 F)	8 of 100 (Routine)
Umzimkulu (Tnk)	South Africa	Record daily precipitation	18.5 mm (0.7 in)	8 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low maximum temperature	16.7 C (62.1 F)	8 of 100 (Routine)
Astoria	United States	Record high maximum temperature	26.1 C (79.0 F)	7 of 100 (Routine)
Chicoutimi	Canada	Record high minimum temperature	18.3 C (64.9 F)	6 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	20.0 C (68.0 F)	6 of 100 (Routine)
Charlottetown	Canada	Record high minimum temperature	21.1 C (70.0 F)	6 of 100 (Routine)
Halmstad	Sweden	Record high minimum temperature	16.0 C (60.8 F)	6 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	12.0 C (53.6 F)	6 of 100 (Routine)
Port Stanley	Canada	Record low maximum temperature	16.7 C (62.1 F)	5 of 100 (Routine)
London South	Canada	Record low maximum temperature	15.6 C (60.1 F)	5 of 100 (Routine)
Peterborough	Canada	Record low maximum temperature	16.7 C (62.1 F)	5 of 100 (Routine)
Alice Springs Post Office	Australia	Record low maximum temperature	10.0 C (50.0 F)	3 of 100 (Routine)
Lucknow	Canada	Record low maximum temperature	13.3 C (55.9 F)	3 of 100 (Routine)
Southampton	Canada	Record low maximum temperature	16.1 C (61.0 F)	3 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record low minimum temperature	11.1 C (52.0 F)	3 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	19.4 C (66.9 F)	3 of 100 (Routine)
Dubuque River	United States	Record low minimum temperature	8.3 C (46.9 F)	3 of 100 (Routine)
Chattanooga Wb City	United States	Record low maximum temperature	26.7 C (80.1 F)	3 of 100 (Routine)

Counts by Type and Timescale

65 records

Records set or tied on 25 August 1917 by type: Highest daily maximum 3, Lowest daily maximum 15, Highest daily minimum 23, Lowest daily minimum 5, Heaviest daily rainfall 19.

Records on 25 August 1917 by type
Record type	Records
Highest daily maximum	3
Lowest daily maximum	15
Highest daily minimum	23
Lowest daily minimum	5
Heaviest daily rainfall	19
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 August 1917 by timescale: all-time 1, monthly 4, daily 60.

How Much Records Were Beaten By

50 broken records

Margins by which the 50 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 22.4. Ties are not counted.

Top 20 by Significance

25 August 1917

Top 20 records on 25 August 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 1917	Cleveland 2717 Euclid, US	daily rain	35.1 mm (1.4 in)	22.4 mm (0.9 in)	36 years	35 of 100 (Notable)
25 August 1917	Chatham, CA	monthly high min	21.1 C (70.0 F)	0.5 C (0.9 F)	42 years	27 of 100 (Routine)
25 August 1917	Barrie, CA	daily low max	15.6 C (60.1 F)	0.5 C (0.9 F)	50 years	21 of 100 (Routine)
25 August 1917	Port Dover, CA	daily low max	15.6 C (60.1 F)	2.7 C (4.9 F)	31 years	21 of 100 (Routine)
25 August 1917	Maly Uzen', RU	daily rain	23.6 mm (0.9 in)	16.9 mm (0.7 in)	4 years	20 of 100 (Routine)
25 August 1917	Barrow Creek, AU	daily rain	16.0 mm (0.6 in)	16.0 mm (0.6 in)	42 years	20 of 100 (Routine)
25 August 1917	Ekaterinburg, RU	daily rain	15.3 mm (0.6 in)	8.0 mm (0.31 in)	35 years	20 of 100 (Routine)
25 August 1917	Tbilisi, GE	daily rain	23.9 mm (0.9 in)	8.9 mm (0.35 in)	26 years	20 of 100 (Routine)
25 August 1917	Tennant Creek Post Office, AU	daily rain	5.8 mm (0.23 in)	5.8 mm (0.23 in)	41 years	20 of 100 (Routine)
25 August 1917	Boulia Airport, AU	daily rain	8.6 mm (0.34 in)	8.6 mm (0.34 in)	29 years	20 of 100 (Routine)
25 August 1917	Pointe Au Pere, CA	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	24 years	20 of 100 (Routine)
25 August 1917	Alice Springs Post Office, AU	daily rain	13.0 mm (0.5 in)	10.0 mm (0.4 in)	31 years	19 of 100 (Routine)
25 August 1917	Haparanda, SE	daily high min	15.0 C (59.0 F)	2.0 C (3.6 F)	34 years	18 of 100 (Routine)
25 August 1917	Umea, SE	daily high min	13.5 C (56.3 F)	2.0 C (3.6 F)	34 years	18 of 100 (Routine)
25 August 1917	Milwaukee Wb City, US	daily low min	6.7 C (44.1 F)	1.6 C (2.9 F)	31 years	18 of 100 (Routine)
25 August 1917	Powell Creek, AU	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	42 years	17 of 100 (Routine)
25 August 1917	Tempe Downs, AU	daily rain	5.6 mm (0.22 in)	5.6 mm (0.22 in)	30 years	17 of 100 (Routine)
25 August 1917	Woodstock, CA	daily low max	16.1 C (61.0 F)	1.7 C (3.1 F)	31 years	17 of 100 (Routine)
25 August 1917	Zametchino, RU	daily high min	13.9 C (57.0 F)	1.6 C (2.9 F)	33 years	17 of 100 (Routine)
25 August 1917	Innsbruck, AT	daily high min	15.4 C (59.7 F)	0.4 C (0.7 F)	37 years	16 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1796 to 1917

Records set or tied on this calendar date in each year from 1796 to 1917. 1917 had 65 records.

Counts for years before the ledger starts come from the same station rules.

Records on 08-25 in each year
Year	Records
1796	1
1801	1
1802	1
1807	2
1809	1
1813	1
1814	1
1816	1
1818	2
1837	1
1838	2
1839	1
1848	1
1852	1
1855	2
1859	1
1861	2
1864	1
1867	2
1869	1
1870	1
1871	2
1872	2
1875	1
1876	5
1877	3
1879	3
1880	2
1884	1
1885	2
1886	1
1887	1
1889	1
1890	3
1892	4
1893	8
1894	2
1895	4
1896	2
1897	2
1898	2
1899	5
1900	13
1901	11
1902	6
1903	13
1904	11
1905	12
1906	29
1907	15
1908	13
1909	22
1910	32
1911	32
1912	32
1913	31
1914	30
1915	94
1916	18
1917	65
1918	37
1919	172
1920	174
1921	50
1922	70
1923	117
1924	402
1925	145
1926	224
1927	356
1928	167
1929	174
1930	247
1931	251
1932	270
1933	307
1934	457
1935	317
1936	859
1937	333
1938	620
1939	366
1940	658
1941	474
1942	514
1943	496
1944	589
1945	462
1946	305
1947	627
1948	876
1949	281
1950	327
1951	352
1952	585
1953	461
1954	520
1955	711
1956	273
1957	479
1958	958
1959	576
1960	585
1961	487
1962	398
1963	510
1964	557
1965	401
1966	715
1967	439
1968	596
1969	631
1970	721
1971	628
1972	596
1973	537
1974	466
1975	650
1976	459
1977	731
1978	702
1979	828
1980	750
1981	671
1982	907
1983	1,277
1984	694
1985	1,048
1986	778
1987	1,533
1988	815
1989	918
1990	817
1991	688
1992	1,680
1993	1,137
1994	617
1995	1,206
1996	1,058
1997	1,553
1998	1,138
1999	895
2000	790
2001	1,021
2002	1,073
2003	872
2004	947
2005	874
2006	1,020
2007	1,345
2008	1,026
2009	824
2010	1,321
2011	1,332
2012	709
2013	619
2014	853
2015	1,157
2016	887
2017	432
2018	438
2019	708
2020	931
2021	597
2022	672
2023	1,565
2024	909
2025	1,071
2026	886

Download the Data

Data for records on 1917-08-25: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	40
5 to 10	6
10 to 15	1
15 to 20	2
20 to 25	1